Looking for info on this single seater

[vintage gt350]

I recently purchased this group of parts / Tub Chassis was abandoned by previous owner ... 30 + years ago . Along with this were a pair of 914/6 Porsche. so there is some mixing of parts . Car has nickle plated roll hoop and unique front control arms (also plated ) tub is buck rivets and chassis is tig welded . this does not look like a 1 off garage build . Brass tag states 73 FSV 03 . Im open to ideas on this one I have restored many Vintage t/a cars but this is my 1st open wheel car . and the search for the Id and history is just part of the fun. Thanks for any help !

[vintage gt350]

car has been identified as the Nickle raced by earl nicewarner in 1972 1973 / if anyone has seen any photos of the car in this period it would be great to see them .

[vintage gt350]

Nicewarmer 1971 SuperVee Season in the Nickle #5:
Daytona 16th
Talledega 4th
Road America DNF
Riverside 9th
Leguna Seca 11th
3 points total

5th in SCCA FSV in Northeast Divisional Championship

For 1972:
Sebring 11th
Watkins Glen 10th
Road Atlanta 9th
Road America 15th
Lime Rock 18th

1972 SCCA Nationals May 17th at Cumberland, Maryland 1st
May 30th at Lime Rock Park, Connecticut 2nd.
1976 SCCA Nationals June 27th at Summit Point 3rd;
July 18th at Watkins Glen 2nd and
August 22 at Summit Point 4th.

In 1977 Nicewarmer moved to Formula Ford.

[vintage gt350]

Nickle car was raced from 1972 - 1975 then Nicewarner changed to Formula ford ...... any one know about the FF ?